http://registry.faa.gov/N165ABLocation: Danville, ARAccident Number: CEN17LA312Date & Time: 08/03/2017, 1200 CDTRegistration: N165ABAircraft: RALPH MARINE DEVIL DOGAircraft Damage: SubstantialDefining Event: Part(s) separation from ACInjuries: 1 NoneFlight Conducted Under: Part 91: General Aviation - Personal On August 3, 2017, at 1200 central daylight time, an experimental amateur-built Ralph Marine Devil Dog, N165AB, veered off the runway and impacted terrain during landing at Danville Municipal Airport (32A), Danville, Arkansas. The airplane sustained substantial damage. The uncertificated pilot was uninjured. The airplane was operated by the pilot and registered to the previous owner under 14 Code of Federal Regulations Part 91 as a personal flight that was not operating on a flight plan. The local flight originated from and was to remain at 32A.The pilot recently purchased the airplane, which was a tricycle, weight-shift control aircraft, that had a 40 mile per hour lift-off speed. The pilot stated that he was practicing takeoffs and landings, which he called "crow hops," on the runway. The pilot intended to fly the airplane along the runway but not enter the airport traffic pattern. He performed four crow hops and during the last landing, the left main landing gear tire became flat and separated from its wheel at a speed of 30 miles per hour. The airplane veered right off the runway surface and into a grass area. The airplane rolled over onto its left side damaging the airplane mast.The pilot stated that the previous airplane owner had put liquid fix-a-flat, which was a product not to be used in aircraft tires, in the left main landing gear wheel. The pilot stated that the liquid fix-a-flat will corrode the aluminum landing gear wheels and would allow the tire to spin on the wheel during braking.Post-accident examination of the airplane by a Federal Aviation Administration inspector revealed the presence of a liquid flat repair substance commonly called "slime" in the left main landing gear wheel and around the inner edges of the tire. The inspector also stated that the diameter of the main landing gear wheel was relatively small compared to the tire. Pilot InformationCertificate: NoneAge: , MaleAirplane Rating(s): NoneSeat Occupied: FrontOther Aircraft Rating(s): NoneRestraint Used: Lap OnlyInstrument Rating(s): NoneSecond Pilot Present: NoInstructor Rating(s): NoneToxicology Performed: NoMedical Certification: NoneLast FAA Medical Exam:Occupational Pilot: NoLast Flight Review or Equivalent: Flight Time:Aircraft and Owner/Operator InformationAircraft Make: RALPHRegistration: N165ABModel/Series: MARINE DEVIL DOGAircraft Category: Weight-ShiftYear of Manufacture: 2008Amateur Built: YesAirworthiness Certificate: Experimental Light SportSerial Number: USMC-DD1Landing Gear Type: TricycleSeats: 2Date/Type of Last Inspection: 08/02/2017, ConditionCertified Max Gross Wt.: 1150 lbsTime Since Last Inspection:Engines: 1 ReciprocatingAirframe Total Time: 170 Hours as of last inspectionEngine Manufacturer: SuzukiELT: Not installedEngine Model/Series: G13BRegistered Owner: PilotRated Power: 100 hpOperator: PilotOperating Certificate(s) Held: None Meteorological Information and Flight PlanConditions at Accident Site: Visual ConditionsCondition of Light: DayObservation Facility, Elevation: RUE, 409 ft mslDistance from Accident Site:19 Nautical Miles Observation Time: 1153 CDTDirection from Accident Site: 45°Lowest Cloud Condition: Scattered / 2900 ft aglVisibility: 10 MilesLowest Ceiling: NoneVisibility (RVR):Wind Speed/Gusts: Calm /Turbulence Type Forecast/Actual: / NoneWind Direction:Turbulence Severity Forecast/Actual: / N/AAltimeter Setting: 30.06 inches HgTemperature/Dew Point: 28°C / 21°CPrecipitation and Obscuration: No Obscuration; No PrecipitationDeparture Point: Dansville, AR (32A)Type of Flight Plan Filed: NoneDestination: Dansville, AR (32A)Type of Clearance: NoneDeparture Time: CDTType of Airspace:Airport InformationAirport: Danville Municipal Airport (32A)Runway Surface Type: AsphaltAirport Elevation: 393 ftRunway Surface Condition: DryRunway Used: 11IFR Approach: NoneRunway Length/Width: 5324 ft / 75 ftVFR Approach/Landing:Wreckage and Impact InformationCrew Injuries: 1 NoneAircraft Damage: SubstantialPassenger Injuries: N/AAircraft Fire: NoneGround Injuries: N/AAircraft Explosion: NoneTotal Injuries: 1 NoneLatitude, Longitude: 35.086944, -93.427500 (est)NTSB Identification: CEN17LA31214 CFR Part 91: General AviationAccident occurred Thursday, August 03, 2017 in Danville, ARAircraft: RALPH MARINE DEVIL DOG, registration: N165ABInjuries: 1 Uninjured.This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.On August 3, 2017, at 1200 central daylight time, an experimental amateur-built Ralph Marine Devil Dog, N165AB, veered off the runway and impacted terrain during landing at Danville Municipal Airport (32A), Danville, Arkansas. The pilot was uninjured and the airplane sustained substantial damage. The airplane was operated by the pilot under 14 Code of Federal Regulations Part 91 as a personal flight that was not operating on a flight plan. The local flight originated from 32A.During the landing, the left main wheel separated from its rim causing the airplane to veer off of the runway.